Clamp for railway-frogs



(No Model.)

F. o. WEIR. CLAMP FOR RAILWAY FROGS.

- v10.607,863.' A Patented oet. 31, 1893.

` 51m/muto@ UNITED STATES PATENT OFFICE.

FREDERIC C. wEIR, or CINCINNATL'OIIIO.

CLAM P FOR RAILWAY-FROGS.

SPECIFICATION forming part of Letters Patent No. 507,863, dated October31, 1893.

Application filed March 21, 1893.

To a/ZZ whom it may concern,.-

Beit known that I, FREDERIC C. WEIR, a citizen of the United States,residing at Cincinnati, in the county of Hamilton and State of Ohio,have invented certain new and useful Improvements in Clamps for Railway-Frogs, of which the following is a specification.

My invention relates to a clamp frog.

The object of my invention is to provide a firm, strong and durableclamping device which allows the parts of the frogs to be easily puttogether and taken apart, and yet insures a Irm and durable connectionof the parts.

The various features of my invention are fully set forth in thedescription of the accompanying drawings making a part of thisspecification, in which Figure lis a top plan view of my improvement.Fig. 2 is a section on line w, Fig. 1. Fig. 3 is a section on line y, y,Fig. l. Fig. 4 is a perspective View of the lling block.

A represent-s the clamps which are made in the form shown, enlarged oncross section line a, b, so as to get the maximum strength for theminimum amount of material.

B represents the point rail; C, D, the wing rails; E the spacing blocksbetween said rails to keep them in proper alignment.

G represents lling blocks placed between the hook of the clamp andoutside rails; each one is a counterpart of the other, and they areconstructed as shown in Fig. 4. Said filling blocks are each providedwith a recess c for receiving the hook of the clamp, and one of saidblocks with a recess d to receive the tightening key.

g represents an orifice for the through bolt L.

The parts are put together as follows: The rails are placed in positionwith the filling blocks E between the rails. The clamp and fillingblocks G are placed in position and slipped on over the forward end ofthe frog and moved together into position; then the through bolt L ispassed through the filling block G, and through lthe rails, and securedSerial No. 467.048. (No model.)

by a nut; then the taper key I is driven in which locks the clamp firmlyinto engagement with the filling blocks and unites all the partstogether in a rigid manner.

I prefer to use a split key and secure it in position by opening the endof the split key after it is driven in, thereby insuring the rigidity ofthe parts. The through bolt assists the key in holding all the parts inposition against longitudinal strains forward in direction of the point;strains in the reverse direction are resisted. by the tapering of thewing rails and the t of the abutting parts. By means of this wedge lockI am enabled to make a very strong and durable frog without anyliability of movement or displacement of the parts due to the strains towhich such frogs are'ordinarily subjected.

Having described my invention, what I claim is.

1. In combination with the rails and clamps of a railway frog, the llingblock G provided with a recess c, receiving the jaw of the clamp, therecess d, and tightening key I engaging said recess, substantially asspecified.

2. A filling block for a railway frog provided with recess c adapted toengage and hold the jaw of the clamp, the bolt orilice g, and the recessfor receiving the taper key, substantially as specified.

3. In combination with the railway frog, Y

FREDERIC C. WEIR.

Witnesses: T. SIMMONS,

C. W. MILES.

